Read string into keyring

crypto.scala

import org.bouncycastle.openpgp.{
  PGPPublicKeyRing,
  PGPPublicKeyRingCollection,
  PGPUtil,
}
import org.bouncycastle.openpgp.operator.jcajce.JcaKeyFingerprintCalculator

def readPGPPublicKeys(pubKeys: List[String]): PGPPublicKeyRingCollection = {
    val fingerprintCalculator = new JcaKeyFingerprintCalculator()
    val publicKeyRings = pubKeys.map { pubKey =>
      new PGPPublicKeyRing(
        PGPUtil.getDecoderStream(new ByteArrayInputStream(pubKey.getBytes)),
        fingerprintCalculator,
      )
    }

    new PGPPublicKeyRingCollection(publicKeyRings.asJavaCollection)
  }